87 lines
3.0 KiB
Python
87 lines
3.0 KiB
Python
|
# -*- coding: utf-8 -*-
|
||
|
|
# This file is part of pygal
|
||
|
|
#
|
||
|
|
# A python svg graph plotting library
|
||
|
|
# Copyright © 2012-2016 Kozea
|
||
|
|
#
|
||
|
|
# This library is free software: you can redistribute it and/or modify it under
|
||
|
|
# the terms of the GNU Lesser General Public License as published by the Free
|
||
|
|
# Software Foundation, either version 3 of the License, or (at your option) any
|
||
|
|
# later version.
|
||
|
|
#
|
||
|
|
# This library is distributed in the hope that it will be useful, but WITHOUT
|
||
|
|
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
||
|
|
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
|
||
|
|
# details.
|
||
|
|
#
|
||
|
|
# You should have received a copy of the GNU Lesser General Public License
|
||
|
|
# along with pygal. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
|
||
|
|
"""
|
||
|
|
Pyramid chart: Stacked bar chart containing only positive values divided by two
|
||
|
|
axes, generally gender for age pyramid.
|
||
|
|
"""
|
||
|
|
|
||
|
|
from __future__ import division
|
||
|
|
|
||
|
|
from pygal.adapters import positive
|
||
|
|
from pygal.graph.horizontal import HorizontalGraph
|
||
|
|
from pygal.graph.stackedbar import StackedBar
|
||
|
|
|
||
|
|
|
||
|
|
class VerticalPyramid(StackedBar):
|
||
|
|
|
||
|
|
"""Vertical Pyramid graph class"""
|
||
|
|
|
||
|
|
_adapters = [positive]
|
||
|
|
|
||
|
|
def _value_format(self, value):
|
||
|
|
"""Format value for dual value display."""
|
||
|
|
return super(VerticalPyramid, self)._value_format(value and abs(value))
|
||
|
|
|
||
|
|
def _get_separated_values(self, secondary=False):
|
||
|
|
"""Separate values between odd and even series stacked"""
|
||
|
|
series = self.secondary_series if secondary else self.series
|
||
|
|
positive_vals = map(sum, zip(
|
||
|
|
*[serie.safe_values
|
||
|
|
for index, serie in enumerate(series)
|
||
|
|
if index % 2]))
|
||
|
|
negative_vals = map(sum, zip(
|
||
|
|
*[serie.safe_values
|
||
|
|
for index, serie in enumerate(series)
|
||
|
|
if not index % 2]))
|
||
|
|
return list(positive_vals), list(negative_vals)
|
||
|
|
|
||
|
|
def _compute_box(self, positive_vals, negative_vals):
|
||
|
|
"""Compute Y min and max"""
|
||
|
|
max_ = max(
|
||
|
|
max(positive_vals or [self.zero]),
|
||
|
|
max(negative_vals or [self.zero]))
|
||
|
|
|
||
|
|
if self.range and self.range[0] is not None:
|
||
|
|
self._box.ymin = self.range[0]
|
||
|
|
else:
|
||
|
|
self._box.ymin = - max_
|
||
|
|
|
||
|
|
if self.range and self.range[1] is not None:
|
||
|
|
self._box.ymax = self.range[1]
|
||
|
|
else:
|
||
|
|
self._box.ymax = max_
|
||
|
|
|
||
|
|
def _pre_compute_secondary(self, positive_vals, negative_vals):
|
||
|
|
"""Compute secondary y min and max"""
|
||
|
|
self._secondary_max = max(max(positive_vals), max(negative_vals))
|
||
|
|
self._secondary_min = - self._secondary_max
|
||
|
|
|
||
|
|
def _bar(self, serie, parent, x, y, i, zero, secondary=False):
|
||
|
|
"""Internal stacking bar drawing function"""
|
||
|
|
if serie.index % 2:
|
||
|
|
y = -y
|
||
|
|
return super(VerticalPyramid, self)._bar(
|
||
|
|
serie, parent, x, y, i, zero, secondary)
|
||
|
|
|
||
|
|
|
||
|
|
class Pyramid(HorizontalGraph, VerticalPyramid):
|
||
|
|
|
||
|
|
"""Horizontal Pyramid graph class like the one used by age pyramid"""
|